Using this LED memorial candle is a breeze. First, open the battery compartment and insert three AAA batteries. Once the batteries are in place, switch on the candle, and enjoy the warm, flickering light. As it doesn't have an open flame, you can place it anywhere, whether on a mantelpiece, a bedside table, or a memorial altar. When it comes to maintenance, if the light starts to dim, simply replace the batteries. Keep the candle away from water to prevent damage. Also, don't try to disassemble it yourself as it may void the warranty. With proper care, this candle will continue to light up your memories for a long time.